Title:
PUMP DEVICE
Document Type and Number:
Japanese Patent JP2001020890
Kind Code:
A
Abstract:
To suppress the occurrence of cavitation to the suction side of a pump and to perform quiet operation through reduction of the generation of cavitation noise.
A branch body 6 positioned opposite to the opening of a return pipe 50 communicating with an oil feed destination is situated at the internal part of a reservoir tank T formed such that the outside of a pump body 1 is surrounded by a cylindrical tank cylinder 5. A part of return oil from the oil feed destination is branched by a branch protrusion 62 and guided in the suction pipe 17 of the pump body 1 through a lead-through pipe 64 and a flow of working oil sucked in a suction chamber 18 through a suction pipe 17 is stabilized.
More Like This:
WO/2008/135028 | SUBMERSIBLE PUMP |
Inventors:
HAMAZAKI YOSHIAKI
Application Number:
JP19675299A
Publication Date:
January 23, 2001
Filing Date:
July 09, 1999
Export Citation:
Assignee:
KOYO SEIKO CO
International Classes:
F04D13/16; F04B23/02; F04B53/00; F04B53/16; F04C2/18; F04C11/00; F04C14/00; F04C15/00; F04C15/06; (IPC1-7): F04D13/16; F04B23/02; F04B53/00; F04B53/16; F04C2/18; F04C15/00; F04C15/04
Attorney, Agent or Firm:
Tono Kono